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c#实现iphone上跟踪设备移动

采用环境：ios 10.7系统 monotouch技术 c#语言 monodevelop开发工具

1、在monodevelop中新建iphone项目，在这儿选择single view application

在xcode中删掉所有，拖拽一个viewcontrol 并将其class命名为：showLocal 拖拽其他控件形成下面的窗体

2、在showLocal.cs中写下如下代码：

核心代码

 1 // This file has been autogenerated from parsing an Objective-C header file added in Xcode.
 2 using System;
 3 using MonoTouch.CoreLocation;
 4 using MonoTouch.Foundation;
 5 using MonoTouch.UIKit;
 6 
 7 namespace Mapping02s {
 8 
 9           public partial class showLocal : UIViewController {
10                      enum CLLocationAccuracy {
11                                 Best=-1,
12                                 NearestTenMeters=10,
13                                 HunderdMeters=100,
14                                 Kilometer=1000
15                      }
16                      CLLocationManager locMgr;
17 
18                      public showLocal(IntPtr handle) : base (handle) {
19                                 locMgr = new CLLocationManager();
20                                 locMgr.DesiredAccuracy = (double)CLLocationAccuracy.Best;
21                                 // 默认值是通知所有事件
22                                 //    应用程序要求的位置数据的经度级别
23                                 locMgr.Delegate = new MyLocalionManagerDelegate(this);
24                                 locMgr.DistanceFilter = 10;//在生成更新位置前，设备必须移动的米数
25                                 locMgr.HeadingFilter = 30;//在生成更新的指南针读数之前设备需要转过的度数
26                      }
27 
28                      public override void LoadView() {
29                                 base.LoadView();
30                                 StartButton.TouchDown += delegate {
31                                           locMgr.StartUpdatingLocation();
32                                           StopButton.Hidden = false;
33                                           StartButton.Hidden = true;
34                                 };
35                                 StopButton.TouchDown += delegate {
36                                           locMgr.StopUpdatingLocation();
37                                           StartButton.Hidden = false;
38                                           StopButton.Hidden = true;
39                                 };
40 
41                      }
42                      private class MyLocalionManagerDelegate:CLLocationManagerDelegate {
43                                 private showLocal Sl;
44                                 int updateCount = 0;
45 
46                                 public MyLocalionManagerDelegate(showLocal aa):base() {
47                                           Sl = aa;
48                                 }
49 
50                                 public override void UpdatedLocation(CLLocationManager manager, CLLocation newLocation, CLLocation oldLocation) {
51                                           var latLong = Math.Round(newLocation.Coordinate.Latitude, 4) + ","
52                                                      + Math.Round(newLocation.Coordinate.Longitude, 4);
53                                           var dist = 0.0;
54                                           Sl.LocationLabel.Text = latLong;
55                                           Sl.AccuracyLabel.Text = newLocation.HorizontalAccuracy.ToString();
56                                           Sl.TimestampLabel.Text = newLocation.Timestamp.ToString();
57                                           if (oldLocation != null) {
58                                                      dist = Math.Round(newLocation.DistanceFrom(oldLocation), 1);
59                                           }
60                                           var text = "Location: " + latLong + Environment.NewLine;
61                                           text += "Accuracy: " + newLocation.HorizontalAccuracy.ToString() + Environment.NewLine;
62                                           text += dist + "m from last reading" + Environment.NewLine;
63                                           text += newLocation.Timestamp + Environment.NewLine;
64                                           text += "___________" + Environment.NewLine;
65                                           Sl.HistoryText.Text += text;
66                                 }
67 
68                                 public override void UpdatedHeading(CLLocationManager manager, CLHeading newHeading) {
69                                           Sl.HeadingLabel.Text = newHeading.TrueHeading.ToString();
70                                           Sl.AccuracyLabel2.Text = Math.Round(newHeading.HeadingAccuracy, 2).ToString();
71 
72                                 }
73 
74                                 public override void Failed(CLLocationManager manager, NSError error) {
75                                           Sl.LocationLabel.Text = "Failed to get location";
76                                 }
77                      }
78           }
79 }